What Causes Excessive Engine Oil Pressure in a Car?

[SanMatthew]

Reasons for excessive engine oil pressure in a car: 1. The viscosity of the oil is too low; 2. The oil strainer screen or oil filter element is clogged; 3. The spring force of the pressure relief valve or return oil valve is weakened or broken, or the sealing surface of the valve is not tight, causing oil leakage and pressure relief; 4. Excessive clearance in the main bearings or connecting rod bearings; 5. Poor performance of the oil pump. Functions of engine oil: 1. Lubrication; 2. Assisting in cooling and temperature reduction; 3. Cleaning and purification; 4. Reducing gas leakage and preventing external pollutants from entering; 5. Preventing contact between water, air, acidic substances, and harmful gases with parts; 6. Shock absorption and cushioning; 7. Reducing wear caused by abrasive particles, surface fatigue, and adhesive wear.